Today Huawei formally announced the Mate 20 and Mate 20 Pro, packing a whole lot of new features. Interestingly, it was also revealed that the Mate 20 series would ditch microSD in favor of a new standard – NM cards. But what the heck are they?

NM stands for Nano Memory, an appropriate name considering the cards are essentially the same exact size as a nanoSIM card. The Huawei Mate 20 and Mate 20 Pro now offer you the choice between two nanoSIM cards or you can swap out one of the SIM...